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    • 1. 发明授权
    • Electric field domain patterning
    • 电场域图案化
    • US5800767A
    • 1998-09-01
    • US307867
    • 1994-09-16
    • Robert L. ByerMartin M. FejerGregory D. MillerLawrence E. Myers
    • Robert L. ByerMartin M. FejerGregory D. MillerLawrence E. Myers
    • G02F1/355B29C71/00
    • G02F1/3558
    • A method of domain patterning a body of ferroelectric material. The method includes the steps of adhering spaced conducting strips to a surface of said body; covering portions of said surface of said body between said strips with material which is insulative relative to electric current produced when an electric field configuration is created in said body and which controls the formation of fringe electric field components in said material; and applying potentials simultaneously to said conducting strips and to a surface of said insulative material to create an electric field configuration in said body whereby said strips define said electric field configuration within said body and wherein said insulating material between said strips defines a potential within said body which is generally the same as the potential applied to said conducting strips.
    • 铁电材料体的域图案化方法。 该方法包括将间隔开的导电条粘合到所述主体的表面上的步骤; 在所述条带之间覆盖所述主体的所述表面的部分,所述材料相对于在所述主体中产生电场结构而产生的电流是绝缘的,并且控制所述材料中的边缘电场分量的形成; 以及将电位同时施加到所述导电条和所述绝缘材料的表面以在所述主体中产生电场结构,由此所述条限定所述主体内的所述电场结构,并且其中所述条之间的所述绝缘材料限定所述主体内的电位 其通常与施加到所述导电条上的电位相同。
    • 3. 发明授权
    • Electric field domain patterning
    • 电场域图案化
    • US6156255A
    • 2000-12-05
    • US111058
    • 1998-07-07
    • Robert L. ByerMartin M. FejerGregory D. MillerLawrence E. Myers
    • Robert L. ByerMartin M. FejerGregory D. MillerLawrence E. Myers
    • G02F1/355G01B15/00H05B6/00
    • G02F1/3558
    • A method of patterning domains within a body of a ferroelectric material includes the application of an electric field thereto via spaced conductors. Prior to applying the electric field to the material effects on the patterning of the existence of fringe electric field components which will be created in said body by said application of an electric field, surface treatments, and relative geometries of the body and the conductors are examined. The steps of this examination include:(a) characterizing the ferroelectric material byfirst measuring the breakdown field as a function of pulse width,determining the domain wall velocity as a function of electric field strength while simultaneously measuring the nucleation statistics,determining the hysteresis of the body relative to several candidate frequencies, andmeasuring the spontaneous polarization in the body, and the body's conductivity and permittivity;(b) characterizing various possible surface treatments bymeasuring the ferroelectric properties for the surface treatments, andidentifying a desired surface treatment with the most extreme values of .eta.v.sup.2 (E), wherein .eta. is the nucleation rate, v is the velocity at which the surface is patterned and E is the electric field,(c) selecting said relative geometries to minimize the formation of fringe electric field components formed in said body by the electric field application; and(d) applying the desired surface treatment to the body.
    • 在铁电材料的主体内构图区域的方法包括通过间隔的导体向其施加电场。 在将电场应用于对通过施加电场在所述主体中产生的边缘电场分量的存在的图案化的材料效应之后,检查物体和导体的表面处理和相对几何形状 。 该检查的步骤包括:(a)通过首先测量击穿场作为脉冲宽度的函数来表征铁电材料,确定畴壁速度作为电场强度的函数,同时测量成核统计,确定磁滞 身体相对于几个候选频率,并测量身体的自发极化,以及身体的电导率和介电常数; (b)通过测量表面处理的铁电性能来表征各种可能的表面处理,并用eta v2(E)的最极值来鉴定所需的表面处理,其中η是成核速率,v是 表面被图案化并且E是电场,(c)选择所述相对几何形状以通过电场施加使形成在所述主体中的条纹电场分量的形成最小化; 和(d)对身体施加所需的表面处理。
    • 5. 发明授权
    • Patterned poled structure devices having increased aperture size,
increased power handling and three dimensional patterning capabilities
    • 具有增加的孔径尺寸,增加的功率处理和三维图案化能力的图案化极化结构器件
    • US6064512A
    • 2000-05-16
    • US869349
    • 1997-06-05
    • Robert L. ByerRobert C. EckardtMartin M. FejerLawrence E. Myers
    • Robert L. ByerRobert C. EckardtMartin M. FejerLawrence E. Myers
    • G02F1/35G02F1/355
    • G02F1/3558G02F2001/3548
    • Devices for increasing the power handling capability through increased aperture size of patterned poled nonlinear optical material are disclosed. One embodiment employs a prism bonded to the top surface of a plate (a surface parallel to the plate) of poled material. The faces of the prism provide entrance and exit windows for light. Light enters the prism, enters the first surface of the plate at a small angle, reflects from the bottom surface of the plate and then exits the device through the prism exit window. The plate exerts a nonlinear effect on the light. Higher power handling is achieved because, compared to prior art techniques, the light is spread over a larger area in the poled plate. A second embodiment provides for the same advantages by bonding several plates to form a single unit. The plates are stacked, aligned, and bonded together. The result is a single unit with a larger aperture and therefore higher optical power handling capability than is possible with a single plate. Also, a stack of patterned plates provides the ability to construct nonlinear optical devices with three-dimensional poled patterns.
    • 公开了通过增加图案化极化非线性光学材料的孔径尺寸来提高功率处理能力的装置。 一个实施例采用结合到极化材料的板的顶表面(平行于板的表面)的棱镜。 棱镜的表面提供入口和出口窗口。 光进入棱镜,以小角度进入板的第一表面,从板的底表面反射,然后通过棱镜出口窗口离开设备。 该板对光线发出非线性效应。 实现更高的功率处理,因为与现有技术相比,光被扩散在极板中较大的区域上。 第二实施例通过将多个板结合以形成单个单元来提供相同的优点。 板被堆叠,对准和结合在一起。 结果是具有比单个板更大的孔径的单个单元,因此具有更高的光功率处理能力。 此外,一叠图案化的板提供了构建具有三维极化图案的非线性光学装置的能力。
    • 6. 发明授权
    • Method for fabricating efficient sources of electromagnetic radiation
    • 制造有效电磁辐射源的方法
    • US06555293B1
    • 2003-04-29
    • US09464464
    • 1999-12-14
    • Martin M. FejerGregory D. MillerRobert G. BatchkoRobert L. Byer
    • Martin M. FejerGregory D. MillerRobert G. BatchkoRobert L. Byer
    • G03C500
    • G02F1/3558
    • A method for fabricating periodically poled structures. The method produces an electric field within a ferroelectric substrate by applying a voltage waveform to an electrode structure disposed on a surface of the substrate. The waveform raises the electric field magnitude to a level substantially greater than that required to reverse domains within the substrate. The waveform then lowers the voltage such that the electric field has a value at which a domain wall velocity is most sensitive to changes in the field. The waveform maintains the electric field value until a current through the substrate drops substantially. The electric field is then lowered to a value below a level required to sustain domain wall motion, but greater than a level below which backswitching occurs. The electric field is then lowered to zero in such a way as to prevent backswitching. Alternatively, the electric field is maintained for a time t determined by t=x/v, where x is a domain wall half-width and v is a domain wall velocity. Subsequently, the waveforms lower the voltage to zero.
    • 周期性极化结构的制造方法。 该方法通过向设置在基板表面上的电极结构施加电压波形而在铁电体基板内产生电场。 该波形将电场强度提高到明显大于反向衬底内的区域所需的电平。 波形然后降低电压,使得电场具有域壁速度对场中变化最敏感的值。 波形保持电场值,直到通过衬底的电流显着下降。 然后将电场降低到低于维持畴壁运动所需的水平的值,但大于低于此位置的后开关的水平。 然后将电场降低至零,以防止反向切换。 或者,电场保持t = x / v确定的时间t,其中x是畴壁半宽度,v是畴壁速度。 随后,波形将电压降至零。